import Car as car


class Battery(car.Car):
    def __init__(self, catgory, name, fuel):
        super().__init__(catgory, name)
        self.fuel = fuel

    def fuelTime(self):
        print(f'我使用的是:{self.fuel}')


if __name__=="__main__":
    Battery(1,2,3).fuelTime()
Battery(1,2,4).fuelTime()


a = [1,2,3,4,53,2,1]
seta = set(a)
print(seta)


b = b'cc'
print(b[0] == ord('c'))
d = 1
print(complex(d, 'bb'))